[Storage] Added blob items count histogram

[Storage] Added blob items count histogram

R=asvitkine, michaeln
BUG=375297
Committed: https://crrev.com/4ab290eb5456785c79725e71719c9257dd2212bb
Cr-Commit-Position: refs/heads/master@{#310897}

[dmurph, 2015-01-09 22:31:07]

Hello michaeln & asvitkine,

This is one more histogram to give us info about the world of blobs.  Can you
please take a look?

Thanks!
Daniel

[michaeln, 2015-01-09 22:33:06]

lgtm

[Alexei Svitkine (slow), 2015-01-09 22:33:47]

asvitkine@chromium.org changed reviewers:
+ asvitkine@chromium.org

[Alexei Svitkine (slow), 2015-01-09 22:33:47]

lgtm % nit

https://codereview.chromium.org/826373003/diff/1/tools/metrics/histograms/his...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/826373003/diff/1/tools/metrics/histograms/his...
tools/metrics/histograms/histograms.xml:36340: +  <summary>The number of blob
items in a constructed blob.</summary>
Nit: Mention when this is recorded.

[dmurph, 2015-01-09 22:41:23]

The CQ bit was checked by dmurph@chromium.org

[dmurph, 2015-01-09 22:41:23]

https://codereview.chromium.org/826373003/diff/1/tools/metrics/histograms/his...
File tools/metrics/histograms/histograms.xml (right):

https://codereview.chromium.org/826373003/diff/1/tools/metrics/histograms/his...
tools/metrics/histograms/histograms.xml:36340: +  <summary>The number of blob
items in a constructed blob.</summary>
On 2015/01/09 22:33:47, Alexei Svitkine wrote:
> Nit: Mention when this is recorded.

Done.

[commit-bot: I haz the power, 2015-01-09 22:42:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/826373003/20001

[commit-bot: I haz the power, 2015-01-09 23:56:46]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-01-09 23:57:37]

Patchset 2 (id:??) landed as
https://crrev.com/4ab290eb5456785c79725e71719c9257dd2212bb
Cr-Commit-Position: refs/heads/master@{#310897}